Bumper for an automobile



FIG. 1 is a front perspective view of a bumper for an automobile showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right-side elevational view thereof; and,

FIG. 6 is a left-side elevational view thereof.

The rear view is not part of the claimed design.

The broken lines are environmental and form no part of the claimed design. 

The ornamental design for a bumper for an automobile, as shown and described. 